Content data retrieval apparatus

Details Content data retrieval apparatus Content data retrieval apparatus

2005-10-04

2010-06-22

Trujillo, James (Department: 2159)

Data processing: database and file management or data structures

Database and file access

Query optimization

C707S737000, C084S609000

Reexamination Certificate

active

07743049

ABSTRACT:
The present invention provides a content data retrieval apparatus capable of appropriately narrowing down the range of search targets even in the case where a distribution of attribute values of a group of contents regarded as search targets is uneven.The content data retrieval apparatus of the present invention includes: an impression value database which stores attribute values; a conversion table in which an impression value is associated with a search word range that is a range of the attribute values associated with a search word; a range modification unit which modifies a relative relationship between a distribution range of attribute values and a search word range by modifying the search word range read out from the conversion table; a receiving unit which receives an input of a search word; and a retrieval unit which retrieves content data corresponding to the search word received by the receiving unit, by searching the attribute values included in the search word range associated with the search word.

REFERENCES:
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European Search Report issued Nov. 11, 2009 in European Application No. 05790249.6.
Cornelia Tudorie: “Linguistic Values on Attribute Subdomains in Vague Database Querying”, WSEAS Transactions on Systems, [Online] vol. 3, No. 2, Apr. 2004, pp. 646-650, XP002553241, ISSN:1109-2777, Retrieved from the Internet [retrieved on Oct. 28, 2009].
Cornelia Tudorie: “Vague Criteria in Relational Database Queries”, The Annals of “Dunarea De Jos” University of Galati, [Online] 2003, pp. 43-49, XP002553242, ISSN: 1221-454X, Retrieved from the internet [retrieved on Oct. 28, 2009].

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